CommentMetadata cm = graph.getMetadata(CommentMetadata.class);
graph.addMetadata(cm.add("Renamed node " + nodeName + ", resource " + node + ", to " + newName));
CommentMetadata cm = graph.getMetadata(CommentMetadata.class);
graph.addMetadata(cm.add("Renamed node " + nodeName + ", resource " + node + ", to " + newName));